Zobrazeno 1 - 10
of 367
pro vyhledávání: '"L. Delaby"'
Publikováno v:
Journal of Dairy Science, Vol 107, Iss 10, Pp 8058-8071 (2024)
ABSTRACT: Early lactation is a critical period for dairy cows, as energy requirements rapidly increase with the onset of lactation; however, early-lactation DMI in pasture-based systems are under measured. The objectives of this study were (1) to mea
Externí odkaz:
https://doaj.org/article/4dc26f5845c34371bc12988f27f57b21
Publikováno v:
Journal of Dairy Science, Vol 107, Iss 4, Pp 2129-2142 (2024)
ABSTRACT: The objective of this study was to quantify the farm gate nitrogen (N) offset potential of perennial ryegrass (Lolium perenne L.; PRG) white clover (Trifolium repens L.; WC) swards by comparing the herbage and milk production from dairy far
Externí odkaz:
https://doaj.org/article/1f58deb8662645b48440191cba8c4704
Publikováno v:
Journal of Dairy Science, Vol 107, Iss 4, Pp 2231-2240 (2024)
ABSTRACT: Improved nitrogen utilization of dairy production systems should improve not only the economic output of the systems but also the environmental metrics. One strategy to improve efficiency is through breeding programs. Improving a trait thro
Externí odkaz:
https://doaj.org/article/6e3b2c5caa704af4aa41de9366aebe4d
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 12, Pp 8871-8884 (2023)
ABSTRACT: Reducing nitrogen pollution while maintaining milk production is a major challenge of dairy production. One of the keys to delivering on this challenge is to improve the efficiency of how dairy cows use nitrogen. Thus, estimating the nitrog
Externí odkaz:
https://doaj.org/article/f30e99e7f70c48c7b2a8d75da15c144a
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 3, Pp 1837-1852 (2023)
ABSTRACT: The objective of this research was to evaluate how different feeding strategies based on various pasture availability (PA) treatments within intensive seasonal production systems affected pasture production and utilization, sward quality, a
Externí odkaz:
https://doaj.org/article/574fb772d0bd44c2a2f07f7c6c018018
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 2, Pp 1097-1109 (2023)
ABSTRACT: Selection for feed efficiency, the ratio of output (e.g., milk yield) to feed intake, has traditionally been limited on commercial dairy farms by the necessity for detailed individual animal intake and performance data within large animal p
Externí odkaz:
https://doaj.org/article/9b77031544504c028963282d70fa19ae
Autor:
B. McClearn, L. Delaby, T.J. Gilliland, N. Galvin, C. Guy, M. Dineen, F. Coughlan, B. McCarthy
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 1, Pp 242-254 (2022)
ABSTRACT: The objective of this study was to investigate the effect of cow genotype and parity on dry matter intake (DMI) and production efficiencies in pasture-based systems. Three dairy cow genotypes were evaluated over 3 yr; 40 Holstein-Friesian (
Externí odkaz:
https://doaj.org/article/ea07f3f1cc9144a0b512644a1106da4b
Publikováno v:
Irish Journal of Agricultural and Food Research, Vol 59, Iss 2, Pp 246-257 (2021)
A characterisation of dairy, beef and sheep breeds and/or strains best suited to profitable/sustainable production within the context of European [semi] intensive pasture-based systems is presented. To deliver optimal performance, pasture must be man
Externí odkaz:
https://doaj.org/article/15c2a50daf7f4cc5856581710877578f
Autor:
M. Cremilleux, M. Coppa, M. Bouchon, L. Delaby, G. Beaure, I. Constant, A. Natalello, B. Martin, A. Michaud
Publikováno v:
Animal, Vol 16, Iss 9, Pp 100608- (2022)
Optimising feed is a key challenge for dairy livestock systems, as forage stock shortages are increasingly frequent and feed is the biggest operating cost. The aim of this experiment was to evaluate the effects of reducing forage quantity and access
Externí odkaz:
https://doaj.org/article/cde84f141a9741c4bbe9c1ff834f5008
Autor:
H. Guyomard, Z. Bouamra-Mechemache, V. Chatellier, L. Delaby, C. Détang-Dessendre, J.-L. Peyraud, V. Réquillart
Publikováno v:
Animal, Vol 15, Iss , Pp 100283- (2021)
Throughout the world, animal production faces huge sustainability challenges. The latter are exacerbated in the European Union (EU) by consumption issues linked, in particular, to the health and environmental impacts of meat consumption, and by the i
Externí odkaz:
https://doaj.org/article/58bed9f9e8e446a8b89de85602953c55